Grain-door for cars



(No Model.) 2 Sheets-Sheet 1.

L. F. MARTIN. GRAIN DOOR-FOR GARS.

No. 452,798* Patented May 26, 1891.

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GRAIN DOOR FOR CARS.

No. 452,798. Patented May 26, 1891.

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Partnr LOUIS F. MARTIN, OF KANSAS CITY, KANSAS, ASSIGNOR OF ONEIIALF TOJOHN IV. CRUMBAUGH AND LANDER C. PRATER, BOTH OF KANSAS CITY,

MISSOURI.

GRAIN-DOOR FOR CARS.

SPECIFICATION forming part of Letters Patent No. 452,798, dated May 26,1891. Application filed October 18, 1890. Serial No.368,564. (No model.)

T all whom t may concern:

Be it known that I, LOUIS F. MARTIN, of Kansas City, Vyan dette county,Kansas, have invented certain new and useful Improve` ments inGrain-Doors for Cars, of which the following is a full, clear, and exactdescription, reference being had to the accompanying drawings, forming apart hereof.

My invention relates to improvements in to grain-doors for cars; and itconsists in the peculiar combination and arrangementof devices, as willbe fully specified hereinafter, and particularly pointed out in theclaims.

My object is to provide a door which may r 5 be very easily andeffectively operated and which may be cheaply constructed and applied tofreight-cars of any construction.

Referring to the drawings, Figure l represents a side elevation of afreight-car, the or- 2o dinary outer doors being open to show myimproved grain-door in its normal or closed position. Fig. 2 is avertical crosssection of the same, showing the different positions thedoor assumes in opening the same by means 2 5 of arrows and dottedlines. Fig. 3 is a vertical longitudinal section of the car, showing theinner side of the grain-door after the first step toward opening thesame has been accomplished. Figs. 4t and 5 are detail per- 3o spectiveviews of attachments of said door.

Similar letters refer to similar parts in all the figures, in which-- Arepresents a freight-car provided with the ordinary outer doors B. Theupper longitudinal beams C of the car are connected directly beneath thecross-beams D by the cylindrical rods E, which are screw-threaded ontheir outer ends and engaged by nuts.

F represents the open casing of the door, in

4c the lower half of which the door G normally rests. A bar I extendslongitudinally across the outer face of the door at its upper edge, andis provided with the inwardly-extending horizontal ears J, which rest inthe notches or recesses I-l in the upper corner of the said door.Extending longitudinally from the outer side of the ears or arms J ofbar I are the trunnions K, which rest and are adapted to pivotallyoperate in notches L in the rear upper edge of plates M, which arerecessed in 5o the inner surfaces of the vertical beams of the casingopposite the ends of the door G. These plates are provided with thevertical lianges N, extending inward a short distance, and against whichthe door abuts when closed. 5 5 The door G is provided on its outersurface, near the lower corners thereof, with the camlevers O, which areadapted to engage the vertical notches P of plates M when the door is inits closed position, as shown in Fig. l. 6o The lower ends of theselevers are provided with flanges or projections Q, which may be graspedto operate the same. R represents a frame consisting of the dependingarms S, connected near their upper ends by the cross and brace bar T,the lower ends of these arms S being bent inwardly and rearwardly at U,and provided with bearings through which the trunnions of bar I pass andpivotally operate. The upper ends of the vertical bars S 7o are loopedat V and pivotally engage the horizontal arm-bearings IV, which engageand are adapted to travel on the cross-bars E of the car.

X represent-s the slot or recess in the bar I, which is adapted t0engage, when the door is in its elevated position, the vertical iiange Yof the plate Z, secured to the inner side of the longitudinal beams C ofthe car.

The operation of my invention is as follows: 8o The locking cam-levers Obeing caused to assume such a position as to unclamp the door,the'latter is swung to the position shown in dotted lines, Fig. 1, andfull lines, Fig. 3, resting against the cross-barTof the depend- 8 5 ingframe R. The door-frame is then forced into the position describedtoward the center of the car until the bails W, sliding on crossbars E,come in contact with eyelets A', which also prevent the said cross-barsfrom sag- 9o ging at the middle. The lower end of the door, whosepivotal point is now at the lower end of vertical bars S of frame R, israised concentrically until the surface of the door reaches a horizontalposition, when it is forced toward the inner side of the longitudinalbeams C, and the forward end is raised until the slot or notch X of barI is in position to engage the flange or plate Z, and, as will bereadily understood, the door cannot accident- 5 ally become disengaged.

Having thus fully described my invention, whatI claim as new, and desireto obtain by Letters Patent, is-

1. In a grain-door for freight-cars having lateral rods therein abovethe door-openings, the combination, with a frame pivotally and movablyhanging from said rods and having depending arms, of a door pivoted atits one edge to the lower ends ot the said arms, as described.

2. In a grain-door for freight-cars having lateral rods therein abovethe door-openings, the combination, with a trame R, pivotally andmovably pendent from the said rods and having depending arms, of a doorpivoted at one edge to the lower ends of the said arms, and a catch Y,adapted to engage thepivoted edge ot the said door, secured to the upperlongitudinal beams of the car, as described.

3. In a grain-door for freight-oars having lateral rods therein abovethe door-openings, the combination, With a frame R, pivotally andmovably pendent from the said rods and having depending arms, of a doorpivoted at one edge to the lower ends of the said arms, a catch Y,adapted te engage the pivoted edge of the said door, secured to theupper longitudinal beams of the car, plates M, having inwardly-extendingvertical slots P, secured to the sides of the doorway, and cams upon thesaid door adapted to engage the said slots in the plates M, asdescribed.

In testimony whereof I affix my signature in presence ot two witnesses.

LOUIS F. MARTIN.

Witnesses:

G. G. THoRPn, Il. E. PRICE.

